The period of a geostationary (synchronous) satellite orbiting the earth over the equator la

A. 16 hours

B. 12 hours

C. 20 hours

D. 24 hours

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  1. Pyrometers are instruments used
  2. The mode of travel of heat energy from the sun across the empty space beyond the earth's atmosphere…
  3. When light travels from one medium to another there is a change in its
  4. If you want to open a door with les difficulty you push it
  5. One finds it more difficult to walk on ice than on a concrete road because
  6. A thermostat is a device used
  7. For detecting and, testing of small electric charges we use
  8. When an electric apparatus is fitted with a three core flexible lead the insulation on the three wires…
  9. An integrated circuit la more advantageous than a conventional circuit because
  10. Mercury is used in a barometer because
  11. The first Indian Satellite launched from a Russian Cosmodrome on April 16, 1975 was named
  12. Some persons are not able to see distant objects clearly because the image of the object is focused…
  13. The number of electrons in the outer orbits of a nucleus gives
  14. The Cact that the compass needle does not point true north was observed first by
  15. The distance between two bodies is halved. Now the force of attraction between them will be
  16. The filament used in the electric lamp is made of
  17. Nuclear fusion is a process in which
  18. The audible range of a normal human ear is frequencies ranging from
  19. One can be recognised by his voice alone due to the factor of
  20. In the electrical circuit of a house the fuse acts as
  21. In the fuse of an electrical installation blows out
  22. The red colour of the setting sun is due to
  23. The barometer was invented by
  24. Resistance is measured in
  25. The Space Application Centre for training in Satellite Communication Technology is located at
  26. Meteors
  27. If an empty cylinder Is half ruled with a liquid, Its centre of gravity is
  28. The rocket engine is motivated by jet propulsion which uses the famous
  29. When a body is partly or wholly immersed in a liquid the apparent loss of weight is equal to the weight…
  30. Less dew is formed on cloudy nights because